CN218347842U - Air bag type pressure adjustable shock absorber - Google Patents
Air bag type pressure adjustable shock absorber Download PDFInfo
- Publication number
- CN218347842U CN218347842U CN202122361605.1U CN202122361605U CN218347842U CN 218347842 U CN218347842 U CN 218347842U CN 202122361605 U CN202122361605 U CN 202122361605U CN 218347842 U CN218347842 U CN 218347842U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- cylinder
- air bag
- shock absorber
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a bumper shock absorber, the gasbag formula adjustable pressure bumper shock absorber that has two-way shock-absorbing function specifically says so. The cylinder comprises a cylinder body and an air storage shell positioned on the outer side of the cylinder body, wherein a flow channel is arranged on the air storage shell, the outer end of the flow channel is connected with the cylinder body through a communicating pipe, and the communicating pipe is hermetically connected with the cylinder body and the air storage shell. The mouth of the cylinder body is provided with a cylinder cover, and hydraulic oil is filled in the cylinder body. A piston rod is arranged in the cylinder body, a rod hole is formed in the cylinder cover, one end of the piston rod penetrates through the rod hole and extends out, a piston is arranged at the other end of the piston rod, and the piston is matched with the inner side wall of the cylinder body in a sliding sealing mode. The piston is provided with a flow valve and an extension valve; and a compression spring is connected between the outer end of the piston rod and the outer side wall of the cylinder body. The air storage shell is characterized in that an air bag is arranged in the air storage shell, inert gas is filled in the air bag, and an inflating nozzle is arranged between the air bag and the wall of the air storage shell. The shock absorber is low in manufacturing cost and good in shock absorption effect.
Description
Technical Field
The utility model relates to a bumper shock absorber, gasbag formula pressure adjustable bumper shock absorber with two-way shock-absorbing function specifically says so. The rear shock absorber is particularly suitable for rear shock absorption of vehicles.
Background
The applicant filed a chinese patent application No. 2021220249968 at 26/8/2021, and disclosed an air-bag type shock absorber with adjustable compression force. The hydraulic cylinder mainly comprises a cylinder body, wherein a cylinder cover is arranged at the opening of the cylinder body, and hydraulic oil is filled in the cylinder body. A piston rod is arranged in the cylinder body, a rod hole is formed in the cylinder cover, one end of the piston rod penetrates through the rod hole to extend out, and a first piston is arranged at the other end of the piston rod. The first piston is provided with a flow valve and an expansion valve. A compression spring is connected between the outer end of the piston rod and the outer side wall of the cylinder body. The air cylinder is characterized in that an air cylinder is arranged on the outer side of the cylinder body, a flow passage is arranged at the cylinder bottom of the air cylinder, and the outer end of the flow passage is connected with the cylinder body through a communicating pipe. A cylinder cover is arranged on a cylinder opening of the air cylinder, an inflation nozzle is arranged on the cylinder cover, a second piston is arranged in the air cylinder, and inert gas is filled in the section of the air cylinder between the second piston and the cylinder cover. The shock absorber utilizes the second piston and the gas outlet cylinder to form a gas storage bag, and the second piston is utilized to compress the inert gas for energy storage or release the energy storage of the inert gas to push the second piston to realize oil compensation between the rod cavity and the rodless cavity. However, the machining precision requirement of the piston is high, and the manufacturing cost is high. Moreover, the second piston in the shock absorber is not guided when sliding and is easy to block, so that the shock absorption effect is poor.
Disclosure of Invention
The invention aims to provide an air bag type pressure adjustable shock absorber which is low in manufacturing cost and good in shock absorption effect.
In order to solve the problems, the following technical scheme is provided:
the air bag type pressure adjustable shock absorber comprises a cylinder body and an air storage shell positioned on the outer side of the cylinder body, wherein a flow channel is arranged on the air storage shell, the outer end of the flow channel is connected with the cylinder body through a communicating pipe, and the communicating pipe is hermetically connected with the cylinder body and the air storage shell. The mouth of the cylinder body is provided with a cylinder cover, and hydraulic oil is filled in the cylinder body. A piston rod is arranged in the cylinder body, a rod hole is formed in the cylinder cover, one end of the piston rod penetrates through the rod hole to extend out, a piston is arranged at the other end of the piston rod, and the piston is matched with the inner side wall of the cylinder body in a sliding sealing mode. The piston is provided with a flow valve and an expansion valve; and a compression spring is connected between the outer end of the piston rod and the outer side wall of the cylinder body. The air storage shell is characterized in that an air bag is arranged in the air storage shell, inert gas is filled in the air bag, and an inflating nozzle is arranged between the air bag and the wall of the air storage shell.
Wherein, the gas storage shell contains a support cylinder, and the mouth part of the support cylinder is provided with a plunger. The gasbag is the bag form, and it is located a support section of thick bamboo, and the oral area of gasbag is located all around between the inside wall of plunger lateral wall and barrel, and is closely cooperating between the lateral wall of gasbag and plunger and the inside wall of barrel. The charging connector is positioned in the plunger.
The plunger is located the oral area of a support section of thick bamboo, and there is the housing support section of thick bamboo oral area outside all around.
The inner end of the flow passage is positioned at the bottom of the inner cavity of the support cylinder.
The valve opening pressure of the extension valve is larger than the valve opening pressure of the circulating valve, and the valve hole circulation area of the extension valve is smaller than the valve hole circulation area of the circulating valve.
An annular supporting sheet is concentrically fixed on the outer end of the piston rod, an annular spring seat is concentrically fixed on the outer side wall of the cylinder body, and the compression spring is located between the annular supporting sheet and the annular spring seat.
The bottom of the cylinder body is provided with a connecting seat, and the outer end of the piston rod is provided with a joint.
By adopting the scheme, the method has the following advantages:
the air storage shell of the air bag type pressure adjustable shock absorber is provided with a flow channel, the outer end of the flow channel is connected with a cylinder body through a communication pipe, the opening part of the cylinder body is provided with a cylinder cover, a piston rod is arranged in the cylinder body, a rod hole is arranged on the cylinder cover, one end of the piston rod penetrates through the rod hole to extend out, the other end of the piston rod is provided with a piston, the piston is provided with a circulation valve and an expansion valve, a compression spring is connected between the outer end of the piston rod and the outer side wall of the cylinder body, an air bag is arranged in the air storage shell and filled with inert gas, and an inflating nozzle is arranged between the air bag and the wall of the air storage shell. When the automobile piston rod is used, the outer end of the piston rod is upwards arranged on an automobile, and the piston is abutted against the cylinder cover when the automobile is not subjected to an external force. When the vehicle is stressed and the compression spring is pressed down, the first piston moves downwards, the volume of the rodless cavity of the cylinder body is reduced, the volume of the rod cavity is increased, and a part of hydraulic oil enters the rod cavity through the circulating valve. Meanwhile, because the increased volume of the rod cavity is smaller than the decreased volume of the rodless cavity, the other part of the hydraulic oil which cannot enter the rod cavity enters the gas storage shell through the communicating pipe and the flow channel, and the gas bag and the inert gas are compressed to store energy. When the compression spring rebounds, the first piston moves upwards, the volume of the rodless cavity is increased, the volume of the rod cavity is reduced, hydraulic oil enters the rodless cavity through the expansion valve, the air bag and the inert gas are released in an energy storage mode, the hydraulic oil in the air storage shell enters the rodless cavity through the flow channel and the communicating pipe to achieve oil compensation, and under the throttling effect of the expansion valve, damping of expansion movement is generated, and shock absorption is achieved. The shock absorber utilizes the compression energy storage of the air bag and the energy storage release of the air bag to realize the oil compensation between the rod cavity and the rodless cavity. The air bag is a flexible component, and only needs to be placed into the air storage shell, so that higher manufacturing precision is not needed, and the manufacturing cost is lower. Moreover, the air bag can not be blocked when being contracted or expanded, thereby ensuring that the damping effect of the damper is always better.
Drawings
Fig. 1 is a schematic structural view of a bladder type pressure adjustable shock absorber of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings;
as shown in fig. 1, the air bag type pressure adjustable shock absorber of the present invention comprises a cylinder body 2 and an air storage shell located outside the cylinder body 2, wherein the air storage shell is provided with a flow channel 16, the outer end of the flow channel 16 is connected with the cylinder body 2 through a communicating pipe 17, the inner end of the flow channel 16 is located at the bottom of the inner cavity of the supporting cylinder 15, and the communicating pipe 17 is hermetically connected with the cylinder body 2 and the air storage shell. A cylinder cover 5 is arranged at the opening of the cylinder body 2, and hydraulic oil is filled in the cylinder body 2. A piston rod 9 is arranged in the cylinder body 2, a rod hole is formed in the cylinder cover 5, one end of the piston rod 9 penetrates through the rod hole to extend out, a piston 3 is arranged at the other end of the piston rod 9, and the piston 3 is matched with the inner side wall of the cylinder body 2 in a sliding sealing mode. The piston 3 is provided with a flow valve 4 and an expansion valve 10. The opening pressure of the extension valve 10 is larger than the opening pressure of the circulation valve 4, and the flow area of the valve hole of the extension valve 10 is smaller than the flow area of the valve hole of the circulation valve 4. And a compression spring 6 is connected between the outer end of the piston rod 9 and the outer side wall of the cylinder body 2. An annular supporting sheet 8 is concentrically fixed on the outer end of the piston rod 9, an annular spring seat 1 is concentrically fixed on the outer side wall of the cylinder body 2, and the compression spring 6 is located between the annular supporting sheet 8 and the annular spring seat 1. An air bag 14 is arranged in the air storage shell, inert gas is filled in the air bag 14, and an inflating nozzle 13 is arranged between the air bag 14 and the wall of the air storage shell. The gas storage shell comprises a support cylinder 15, and a plunger 11 is arranged at the opening part of the support cylinder 15. The gasbag 14 is the bag-shaped, and it is located a support section of thick bamboo 15, and the oral area of gasbag 14 is located between around the lateral wall of plunger 11 and the inside wall of barrel all around, and is closely cooperating between gasbag 14 and the lateral wall of plunger 11 and the inside wall of barrel. The charging nipple 13 is located in the plunger 11. The plunger 11 is positioned in the opening part of the support barrel 15, and a cover 12 is arranged on the outer side of the periphery of the opening part of the support barrel 15.
For the convenience of installation, the bottom of the cylinder body 2 is provided with a connecting seat 18, and the outer end of the piston rod 9 is provided with a joint 7.
When the automobile air cylinder is used, the outer end of the piston rod 9 is upwards arranged on an automobile, and the piston 3 abuts against the cylinder cover 5 when the automobile is not subjected to external force. When the vehicle is stressed and the spring is pressed down, the piston 3 moves downwards, the volume of the rodless cavity is reduced, the volume of the rod cavity is increased, and a part of hydraulic oil enters the rod cavity through the circulating valve 4. Meanwhile, because the increased volume of the rod cavity is smaller than the decreased volume of the rodless cavity, the other part of the hydraulic oil which cannot enter the rod cavity enters the gas storage shell through the communicating pipe 17 and the flow passage 16, and the gas bag 14 is compressed to store energy. When the spring rebounds, the piston 3 moves upwards, the volume of the rodless cavity is increased, the volume of the rod cavity is reduced, hydraulic oil enters the rodless cavity through the expansion valve 10, the energy storage of the air bag 14 is released, the hydraulic oil in the air storage shell enters the rodless cavity through the flow passage 16 and the communicating pipe 17 to achieve oil compensation, and under the throttling action of the expansion valve 10, damping of expansion motion is generated to achieve shock absorption. The inflation nozzle 13 can be used to control the pressure of the air bag 14, so as to change the compressed force of the air bag 14.
Claims (7)
1. The air bag type pressure-adjustable shock absorber comprises a cylinder body (2) and an air storage shell positioned on the outer side of the cylinder body (2), wherein a flow channel (16) is arranged on the air storage shell, the outer end of the flow channel (16) is connected with the cylinder body (2) through a communicating pipe (17), and the communicating pipe (17) is hermetically connected with the cylinder body (2) and the air storage shell; a cylinder cover (5) is arranged at the opening part of the cylinder body (2), and hydraulic oil is filled in the cylinder body (2); a piston rod (9) is arranged in the cylinder body (2), a rod hole is formed in the cylinder cover (5), one end of the piston rod (9) penetrates through the rod hole to extend out, a piston (3) is arranged at the other end of the piston rod (9), and the piston (3) is matched with the inner side wall of the cylinder body (2) in a sliding sealing manner; the piston (3) is provided with a flow valve (4) and an expansion valve (10); a compression spring (6) is connected between the outer end of the piston rod (9) and the outer side wall of the cylinder body (2); it is characterized in that an air bag (14) is arranged in the air storage shell, inert gas is filled in the air bag (14), and an inflating nozzle (13) is arranged between the air bag (14) and the wall of the air storage shell.
2. The air bag type pressure adjustable shock absorber according to claim 1, wherein the air storage case comprises a support cylinder (15), and the mouth of the support cylinder (15) is provided with a plunger (11); the air bag (14) is bag-shaped and is positioned in the supporting cylinder (15), the periphery of the opening part of the air bag (14) is positioned between the outer side wall of the plunger (11) and the periphery of the inner side wall of the cylinder body, and the air bag (14) is tightly matched with the outer side wall of the plunger (11) and the inner side wall of the cylinder body; the charging connector (13) is positioned in the plunger (11).
3. The pressure-tunable gas-bag shock absorber according to claim 2, wherein the plunger (11) is located in the mouth of the support cylinder (15), and a cover (12) is provided outside around the mouth of the support cylinder (15).
4. The pressure-tuned gas-cell shock absorber according to claim 2, wherein the inner end of the flow channel (16) is located at the bottom of the inner chamber of the support cylinder (15).
5. The bladder type pressure tunable shock absorber according to claim 1, wherein the valve opening pressure of the extension valve (10) is larger than the valve opening pressure of the circulation valve (4), and the flow area of the valve hole of the extension valve (10) is smaller than the flow area of the valve hole of the circulation valve (4).
6. The air bag type pressure adjustable shock absorber according to claim 1, wherein an annular support plate (8) is concentrically fixed to the outer end of the piston rod (9), an annular spring seat (1) is concentrically fixed to the outer side wall of the cylinder body (2), and the compression spring (6) is located between the annular support plate (8) and the annular spring seat (1).
7. The adjustable air bag type pressure shock absorber of 1~6 as claimed in claim, wherein the bottom of the cylinder (2) has a connecting base (18), and the outer end of the piston rod (9) has a joint (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122361605.1U CN218347842U (en) | 2021-09-29 | 2021-09-29 | Air bag type pressure adjustable shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122361605.1U CN218347842U (en) | 2021-09-29 | 2021-09-29 | Air bag type pressure adjustable shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218347842U true CN218347842U (en) | 2023-01-20 |
Family
ID=84921677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122361605.1U Active CN218347842U (en) | 2021-09-29 | 2021-09-29 | Air bag type pressure adjustable shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218347842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118167716A (en) * | 2024-05-16 | 2024-06-11 | 常州轩豪机械有限公司 | Initial speed acceleration structure based on hydraulic cylinder |
-
2021
- 2021-09-29 CN CN202122361605.1U patent/CN218347842U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118167716A (en) * | 2024-05-16 | 2024-06-11 | 常州轩豪机械有限公司 | Initial speed acceleration structure based on hydraulic cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6135434A (en) | Shock absorber with positive and negative gas spring chambers | |
| US6311962B1 (en) | Shock absorber with external air cylinder spring | |
| US6213261B1 (en) | Hydropneumatic spring | |
| CN102720795A (en) | Hydro-pneumatic spring for amphibious vehicles and hydraulic regulating device for hydro-pneumatic spring for amphibious vehicle | |
| US8863918B2 (en) | Hydraulic shock absorber | |
| CN109340298B (en) | Piston built-in volume compensation structure for damper | |
| CN218347842U (en) | Air bag type pressure adjustable shock absorber | |
| CN202251612U (en) | Oil-gas spring of automobile suspension system | |
| CN102359528B (en) | Hydropneumatic spring of automotive suspension system | |
| US20110024957A1 (en) | Vehicle height adjusting apparatus | |
| CN216951448U (en) | Buffer structure of shock absorber and shock absorber | |
| CN215908302U (en) | Air bag type compression force adjustable shock absorber | |
| CN212225857U (en) | Integrated double-air-chamber oil-gas damper | |
| CN210068834U (en) | Shock absorber with adjusting function | |
| CN217207477U (en) | Pneumatic suspension structure of motorcycle | |
| CN108869622B (en) | Plunger type buffer device | |
| CN106151354A (en) | A kind of air spring automatic air supply device | |
| CN110953280B (en) | Liquid-gas buffer | |
| CN216666326U (en) | Double-chamber air spring | |
| CN201265618Y (en) | Double-cylinder high-pressure vibration absorber | |
| CN115492889A (en) | Novel compression buffer structure's bumper shock absorber and vehicle | |
| CN201382116Y (en) | Rod power accumulator type oil-gas spring | |
| CN101482157A (en) | Oil gas spring with energy accumulator in rod | |
| CN114562532B (en) | Self-adaptive rigidity-adjusting double-chamber air spring | |
| CN206449149U (en) | Elevated pressure nitrogen reequips damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |